function replace(){
    // var diyi = document.getElementById("first");
    // var dier = document.getElementById("second");

    // console.log("第一段:innerText--->"+diyi.innerText);
    // console.log("第一段:class--->"+diyi.className);
    // console.log("第一段:id--->"+diyi.id);
    // console.log("第一段:tagName--->"+diyi.tagName);
    // dier.innerText = diyi.innerText;
    document.getElementsByClassName("female")[0].setAttribute("style","color:red");
    document.getElementsByClassName("female")[1].setAttribute("style","color:red");
}